mhsjdm5881 mhsjdm5881

23-10-2017
Mathematics

contestada

Suppose a and b are 3x3 matrices, with det(a) = 5 and det(b) = 3.
a. det(2a) = ? 4 pts
b. det((ab)-1) = ?

Respuesta :

LammettHash LammettHash

27-10-2017

[tex]\det(2\mathbf A)=2^3\det\mathbf A=8\times5=40[/tex]

[tex]\det(\mathbf{AB})^{-1}=\dfrac1{\det\mathbf{AB}}=\dfrac1{\det\mathbf A\det\mathbf B}=\dfrac1{5\times3}=\dfrac1{15}[/tex]

Answer Link

Otras preguntas

The citizens of ________ are most actively involved in interest groups and community causes.

Someone please help answer questions

help with this please question 3

why is carbon monoxide dangerous

Why can fascists can gain power ?

Assume that if the shear stress in steel exceeds about 4.00 108 n/m2, the steel ruptures. (a) determine the shearing force necessary to shear a steel bolt 1.15

Gonzales has only $42.50 to spend at a clothing store. He wants to buy a shirt that cost $29, including tax, and some bracelets that cost $4.50, including tax.

who's people waged war on the other group ? powhatan settlers both neither

Solving equations with variable on both sides Solve equation.check answer 5(y - 4)=7(2y+1) Pls & thank you again

It takes a bus driver 30 minutes to pick up students from four spots. The last stop is at the corner of Green Street and Route 70. The most direct route to sch